Evaluating performance and efficiency of the GitHub Copilot agentic harness
Explore how the GitHub Copilot agentic harness delivers strong results across multiple benchmarks and leading token efficiency.
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Home / AI & ML / GitHub Copilot Evaluating performance and efficiency of the GitHub Copilot agentic harness across models and tasks Explore how the GitHub Copilot agentic harness delivers strong results across multiple benchmarks and leading token efficiency, while maintaining flexibility to choose among more than 20 models. Shibani Basava & Carlos Castro June 25, 2026 | 7 minutes Share: While the model provides the raw intelligence, the harness shapes how effectively that intelligence is applied. The GitHub Copilot agentic harness is a single shared component of the GitHub Copilot SDK, which powers the GitHub Copilot CLI, GitHub Copilot app, and Copilot code review, along with a wide variety of experiences across GitHub and Microsoft. Improve the harness, and every surface benefits.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at The GitHub Blog.
